Rugged RDM-DB Dual Band Mobile Radio - Digital and Analog - UHF / VHF delivers superior audio and crystal-clear communication. It offers easy switching from digital to analog, ensuring connectivity to analog radios. Notably, digital mode provides loud, clear transmission throughout its range unlike analog's gradual fading. Digital reception focuses on the voice message, ignoring RF interference for exceptional clarity, even rebuilding corrupted voice sounds using auto error correction due to interference. RDM-DB is also compatible with all analog UHF and VHF radios, and all DMR digital radios like Motorola, among others. Transmissions to a second digital radio are available via a digital channel. It measures 5.5inW x 6.75inD x 2inH Front / 1.5in H Back and is suitable for use with all VHF/UHF business band radios operating on matching frequencies. This includes RDH16, and more, with a business license required.